10 Best Weatherproof Padlocks 2025 in the United States

The SEPOX Ultimate Outdoor Padlocks come in a pack of 24, each with its own unique key, making them great for users needing secure, separate access for multiple locks. Crafted from aluminum and alloy steel, these locks are built to resist rust and harsh weather, which is important for outdoor use. Their vibrant green color and long shackle design allow easy fitting on larger gates and lockers, adding versatility.

The double shield lock with a ball bearing mechanism offers strong protection against forced break-ins, enhancing security. At about 3.5 x 9.2 x 5.1 inches and weighing nearly 8 pounds for the full set, these padlocks are sturdy but not overly bulky. While aluminum helps with weather resistance, it may not be as tough as hardened steel against heavy physical attacks. Also, each lock uses a 5-pin cylinder with 3200 possible key codes, which provides a decent level of security.

These padlocks are ideal for outdoor fencing, sheds, gym lockers, and yard equipment where weatherproofing and individual lock control matter most. They might be less suitable if ultra-high security or an extremely compact lock is required. SEPOX offers a reliable, weatherproof solution with good security features and practical size, especially suited for outdoor use where rust and weather are concerns.

The ABUS Granit 37/80 padlock is a robust and reliable choice for securing your valuables, offering a high level of security suitable for both indoor and outdoor use. Made from hardened steel and featuring a corrosion-resistant coating, this padlock is designed to withstand harsh weather conditions and physical attacks such as cutting and drilling. The enclosed shackle design further enhances its security, though it requires precise fitting, so it's essential to check the dimensions (1/2" shackle diameter, 7/8" vertical and horizontal clearances) to ensure compatibility with your lock hasp or chain.

The advanced Plus cylinder system provides exceptional protection against picking and drilling, with over 250,000 possible key variations, ensuring peace of mind for users seeking high-level security. The lock comes with two standard Plus keys, but it’s worth noting that they are not easily replaceable if lost. At a weight of 2.4 pounds and dimensions of 3.09 x 1.53 x 3.06 inches, the padlock is quite substantial, which adds to its deterrent effect but may be cumbersome for some users.

The padlock’s versatility allows it to be used for various applications, from storage units and warehouses to gates and garages. However, the need for precise fitting and the lack of a key replacement service might be considered drawbacks. In summary, the ABUS Granit 37/80 is a heavy-duty, weatherproof padlock that delivers excellent security but requires careful consideration of its dimensions and key management.

The Sargent & Greenleaf 8077AD Combination Padlock boasts a hardened steel body and shackle, ensuring robust security and durability. It's designed to meet Federal Specification FF-P-110J, which might appeal to those looking for high-security standards. The padlock offers an impressive 125,000 possible combinations, adding to its security credentials. The jog dial controller and combination lock mechanism also provide ease of use without the need for keys.

The lock's polished finish and dimensions of 1.96 x 2.37 x 4.15 inches make it a good fit for various security applications. However, it's important to note that this padlock is intended for interior use only, which is a significant drawback for those needing weatherproofing for outdoor conditions. Additionally, while it shows obvious signs of tampering, it doesn't have any specific weatherproof coating to protect against the elements.

With a weight of 1.35 pounds, it is relatively heavy, which might be inconvenient for some users. If you need a strong, tamper-evident padlock for indoor use, the Sargent & Greenleaf 8077AD could be a suitable choice. However, for outdoor weatherproof requirements, this padlock might not be the best option.